move fieldlines code to meshing dir
move visualization function pointers to meshing directory
DLL_HEADER -> NGGUI_API in visualization lib
move soldata.hpp to meshing
update occ, no freetype necessary anymore
add Ng_AddLockedPoint
extend API so user can set/get domain for element (optional -> does not break existing API)
the commit also (optionally) allows to send log messages (cout, cerr, testout) to a Null stream buffer. this allows applications to make netgen quiet
* Modified the Ng_GetElement_2D function to return also the element type giving it the same base functionality as Ng_GetSurfaceElement, but with the capability of returning the region index too (called matnum)
* Added the capability of generating Second Order 2D / 3D Meshes in Nglib
* More Meshing Parameters now taken into account in Nglib
* Streamlined the process of transferring the locally defined meshing parameters to the internal meshing parameters structure using a single function called "Transfer_Parameters"
* Formatting changes to make the gaps between function definitions consistent
* Added a new compile target for Nglib (Release(OCC))
* Netgen and Nglib solution files updated to remove non-existent files and add new source files into project
* Implemented by adding a dllexport / dllimport header for all exported functions to indicate to windows which functions are to be made available via the library.
* System change driven via WIN32 define, making it transparent to Linux builds.
